کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1448776 988683 2009 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of phase change and solute diffusion on spreading on a dissolving substrate
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Effect of phase change and solute diffusion on spreading on a dissolving substrate
چکیده انگلیسی

Dissolutive wetting is investigated numerically using a diffuse-interface model that incorporates fluid flow, solute diffusion and phase change. A range of materials parameters are investigated: (1) permitting recovery of the hydrodynamic limit by suppressing the dissolution of the substrate and (2) evaluating the role of diffusion. The time history of droplet size, droplet concentration and angles between the interfaces are given. For cases in which convection dominates, the dynamics of spreading agrees with a known hydrodynamic model for spreading of inert fluids. A phase change increases wetting speed, due to a condensation that takes place near the triple junction. There is also a strong dependence of the wetting kinetics on the solute diffusivities. Details of composition changes during spreading are also discussed, such as the composition path of the bulk liquid probed at different locations in the drop.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 57, Issue 20, December 2009, Pages 6022–6036
نویسندگان
, , , ,